Originally Posted by
the scout
What is the extent of the new parts required to convert from Shimano triple to Shimano double on a road bike most of the existing parts are Ultegra or 105.
If you're not fit and thin enough to run a 39x21, 39x23, or 39x26 small gear (assuming 10 cogs - 19, 21, and 23 are the numbers with 9 and 18, 19, 21 with 8) depending on whether you prefer an 11, 12, or 13 starting cog you'd benefit from keeping the triple and swapping the cassette through tighter spacing between cogs and less front shifting than with a compact double.